FOR 99-04 FORD F-150/F150 LIGHTNING 5.4L V8 8-2 S. Our 4-1 Long Tube off-road headers are designed to allow the exhaust gasses to flow more freely from each 4 cylinder bank and combine in a more efficient manner. Tubing has been optimized for the 5.4L(330ci) engine. This creates a reduction in cylinder backpressure and improved exhaust gas velocity.These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound. High Performance Stainless Steel Header Exhaust.
Made of High Quality T304 Stainless Steel Material. Design for High Air Flow Rate.
Inlet Size: 8 X 1.625 Ports. Piping Diameter: 8 X 1.625" Manifold Pipings; into 2 X 2.500" Exhaust Pipes. O2 Sensor Insertion Bungs, EGR Bungs and Metal Gasket Included. TIG Welded CNC Machine Flange.Increase High Flow Air, Instantly Gain at least 10 -15 Hp. Professional Installation is Highly Recommended (No Instruction Included). 1 X Set of Header Exhaust System. Exhaust Clamp, Gasket(s) and Bolt(s) as Shown in the Picture Above. 99-04 Ford F-150 5.4L V8. Professional Installation is Highly Recommended. Installation Instruction is NOT Included. Minor modifications may be needed for some of our products or for certain car models. For emissions related items, please check your local jurisdiction for emission specific requirements before purchasing.
All items do not come with installation instruction unless otherwise specified. All pictures and images are for illustrative purposes only. All Registered Trademarks and Copyrights belong to their respective owners. DOMESTIC LOWER 48 US STATES.We cannot be held responsible for incorrect or undeliverable addresses. The item "Racing Exhaust Header Manifold for Ford F150 Lighting Harley-Davidson 5.4L 99-04" is in sale since Thursday, August 5, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Manifolds & Headers". The seller is "tsk2010" and is located in Texas, TX. This item can be shipped worldwide.